1. Locally Presentable and Accessible Categories;Adámek,1994
2. On locally reflexive categories of structures;Adámek,1992
3. The logic of structures;Ageron;J. Pure Appl. Algebra,1992
4. Syntactic characterization of amalgamation, convexity and related properties;Bacsich;J. Symbolic Logic,1974
5. Model Theory;Chang,1990